Analysis of optical damage mechanisms in hollow-core waveguides delivering nanosecond pulses from a Q-switched Nd: YAG laser

J. P. Parry; T. J. Stephens; J. D. Shephard; J. D C Jones; D. P. Hand

doi:10.1364/AO.45.009160

Analysis of optical damage mechanisms in hollow-core waveguides delivering nanosecond pulses from a Q-switched Nd: YAG laser

J. P. Parry, T. J. Stephens, J. D. Shephard, J. D C Jones, D. P. Hand

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Hollow-core waveguides consisting of a glass capillary tube with an internal reflective coating are capable of delivering pulse energies of tens of millijoules with improved focusability compared to step index fibers of similar core diameter. We demonstrate the capability of these fibers to deliver high-power Q-switched pulses at the fundamental (1064 nm), second (532 nm), and third (355 nm) harmonics of a Nd:YAG laser, both in terms of peak power and beam quality delivered. In terms of peak power delivery, the primary limitation is the occurrence of bend-induced optical damage to the reflective coating. The damage mechanism and the influential factors are analyzed, in particular, the dependence upon the number of guided modes, core diameter, coating thicknesses, and input polarization alignment. © 2006 Optical Society of America.

Original language	English
Pages (from-to)	9160-9167
Number of pages	8
Journal	Applied Optics
Volume	45
Issue number	36
DOIs	https://doi.org/10.1364/AO.45.009160
Publication status	Published - 20 Dec 2006

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title = "Analysis of optical damage mechanisms in hollow-core waveguides delivering nanosecond pulses from a Q-switched Nd: YAG laser",

abstract = "Hollow-core waveguides consisting of a glass capillary tube with an internal reflective coating are capable of delivering pulse energies of tens of millijoules with improved focusability compared to step index fibers of similar core diameter. We demonstrate the capability of these fibers to deliver high-power Q-switched pulses at the fundamental (1064 nm), second (532 nm), and third (355 nm) harmonics of a Nd:YAG laser, both in terms of peak power and beam quality delivered. In terms of peak power delivery, the primary limitation is the occurrence of bend-induced optical damage to the reflective coating. The damage mechanism and the influential factors are analyzed, in particular, the dependence upon the number of guided modes, core diameter, coating thicknesses, and input polarization alignment. {\textcopyright} 2006 Optical Society of America.",

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AU - Parry, J. P.

AU - Stephens, T. J.

AU - Shephard, J. D.

AU - Jones, J. D C

AU - Hand, D. P.

PY - 2006/12/20

Y1 - 2006/12/20

N2 - Hollow-core waveguides consisting of a glass capillary tube with an internal reflective coating are capable of delivering pulse energies of tens of millijoules with improved focusability compared to step index fibers of similar core diameter. We demonstrate the capability of these fibers to deliver high-power Q-switched pulses at the fundamental (1064 nm), second (532 nm), and third (355 nm) harmonics of a Nd:YAG laser, both in terms of peak power and beam quality delivered. In terms of peak power delivery, the primary limitation is the occurrence of bend-induced optical damage to the reflective coating. The damage mechanism and the influential factors are analyzed, in particular, the dependence upon the number of guided modes, core diameter, coating thicknesses, and input polarization alignment. © 2006 Optical Society of America.

AB - Hollow-core waveguides consisting of a glass capillary tube with an internal reflective coating are capable of delivering pulse energies of tens of millijoules with improved focusability compared to step index fibers of similar core diameter. We demonstrate the capability of these fibers to deliver high-power Q-switched pulses at the fundamental (1064 nm), second (532 nm), and third (355 nm) harmonics of a Nd:YAG laser, both in terms of peak power and beam quality delivered. In terms of peak power delivery, the primary limitation is the occurrence of bend-induced optical damage to the reflective coating. The damage mechanism and the influential factors are analyzed, in particular, the dependence upon the number of guided modes, core diameter, coating thicknesses, and input polarization alignment. © 2006 Optical Society of America.

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DO - 10.1364/AO.45.009160

M3 - Article

SN - 1559-128X

VL - 45

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EP - 9167

JO - Applied Optics

JF - Applied Optics

IS - 36

ER -

Analysis of optical damage mechanisms in hollow-core waveguides delivering nanosecond pulses from a Q-switched Nd: YAG laser

Abstract

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